On the effect of addition of 1,2 propylene glycol composition on power and torque of an efi passenger car fueled with methanol-gasoline m15

Abstract

The utilization and development of clean and renewable energy resources is very attractive because of the world sustainability and environmental pollution. Methanol, ethanol and their blends with gasoline are well known as important alternative fuels for vehicle engines. A serious problem encountered in using gasoline–alcohol blends as motor fuel at low temperatures is the separation of the mixture into two liquid phases, which is strongly influenced by the water content. An important multi-purpose chemical that has an extensive use as anti-freeze agent, 1,2-propylene glycol, is attracting interest in recent years as an additive for methanol- gasoline fuel. The aim of this work is to investigate the effect of composition of the 1,2-propylene glycol additive on engine power and torque of an EFI passenger car fueled with methanol-gasoline blend M15. Research was conducted in the laboratory on a 1.2 L small gasoline passenger car, equipped with electronic injection system, using a blend of 15% gasoline and 85% methanol, by varying the composition of additive of 3 ml/l, 4 ml/l, 5 ml/l, 6 ml/l, 7 ml/l, 8 ml/l, 9 ml/ l, and 10 ml/l. The measurement of power and torque was facilitated by using a simple engine dyno scanner on a dynamometer roll chassis. From the study it has found that the effect of variation of additive composition tend to decrease engine power, but the value of the torque has a little bit increased,compared to puregasoline engine. There was a best value of additive composition that showed high power and torque. According to the effect of additive composition on the power and torque it can be concluded that the best additive composition is 8 ml/l, which is86.6 Nm on 2500 rpm, while the power remains constant in the value of 51.7 kW on 5800 rpm..